Adjustable head liquid discharge control



Sept. 26, 1950 R. H. PYLE 2,523,634

ADJUSTABLE HEAD LIQUID DISCHARGE CONTROL Filed Oct. 2, 1948 EIIIII I muy i INVENTOR. Ro/SRT H PYM BY ATTORNEY.

Patented Sept. 26, 1950 UNITED ADJUSTABLE HEAD LIQUID DISCHARGE CONTROL Robert H. Pyle, Denver, Colo., assignor to Western Filter Co., Denver, Colo.

Application October 2, 1948, Serial No. 52,550

Claims. ll Y This invention relates to anadjustable feeder for feeding fluid chemical reagents more particularly for water treatment The principal object of the invention is to provide a simple and highly efcient device which can be easily and accurately adjusted to deliver a continuous and uniform flow of reagent at any desired rate.

Another object of the invention is to so construct the device that the rate of flow will depend upon'an adjustable head or pressure which will not vary after being preset at the desired rate.

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and efciency. These will become more apparent from the following description. v

In the following detailed description of the invention, reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout thedescription.

In the drawing:

Fig. 1 is a side view of the improved adjust# able-head, fluid-discharge, control device;

Fig. 2 is a vertical section therethrough, taken on the line 2 2, Fig. 1, illustrating the device in the maximum feed position;

Fig. 3 is a reduced scale, fragmentary, sectional view of a chemical reagent reservoir, illustrating the device in place therein in an intermediate feed position.

Fig. 4 is a similar View, with the device in the minimum feed position; and

Fig. 5 is a diagrammatic sectional view illustrating the relation of the device with a chemical reagent reservoir.

In the drawing, a chemical reagent solution supply tank or reservoir is indicated at I0. In applying the device to the reservoir I 0 a level compartment 34 is formed in or on the reservoir. As illustrated the compartment 34 is formed at one end of the tank and is divided from the latter by means of a, partition plate I2 terminating below 'the top of the reservoir I0. The compartment is provided with a sub-bottom`II positioned above the bottom of the compartment I0. A bleed port 36 communicates through vthe partition plate QI2 immediately aboveV the installations.

reagents such as a suspension of hydrated lime ,55

t or the like.

, tube or jacket I4.

2 The solution is preferably kept in agitation in any desired manner to prevent settling of the suspended particles. The agitation is assisted by constantly circulating the solution through a pump which intakes from the bottom of the reservoir I0 and discharges into the compartment 34 as shown in Fig. 5. The Volume of solution being pumped into the compartment 34 exceeds the flow returning through the bleed port 36 so that the major portion will overflow the partition I2 to maintain a constant iluid level in the compartment independent of the varying fluid level in the reservoir IIJ. The now through the port 36 sweeps any settled solids from the sub-bottom I I.

The device, per se, comprises a hollow vertical tube I4 permanently xed in a threaded nipple I5 so that it will project upwardly and downwardly therefrom. When installed, the threaded portion of the nipple I5 extends upwardly through a receivingropen'ing in the bottom II, as illustrated. A clamping nut I6 is threaded onto the nipple I5 so as to clamp the nipple to the bottom II so as to form a watertightV joint with the bottom through the medium of suitable sealing washers I'I.

A metering rod I8 is positioned within the The lower extremity of the metering rod I8 is hollow so as to form a discharge `chamber I9 in the lower extremity of the rod. The lower extremity of the chamber I9 is internally threaded, as shown at 29, to receive a threaded orifice plug 2| having an external shoulder 22. The lower extremity of the metering rod is enlarged to form a shoulder portion 23 and the upper extremity of the metering rod I8 is provided with a threaded stud 26.

vThe threaded stud 26 is designed to receive either a metering rod extension member 2'I or a finger knob 28. In Fig. 2 the metering rod extension member 21 is illustrated in place on the stud 26 and in Fig. 4 the finger knob 28 is illustrated in place thereon. The metering rod I8 and the extension member 21 are provided with spaced and numbered index marks 25, the num-v bers continuing in sequence from the rod VI8 onto the extension member 21.

The metering rod is supported in the tube I4 by means of a cap collar 29, the lower surface of which is recessed to receive the upper extremity of thetube I4. able set screws 3|! which can be threaded into engagement with either the metering rod I8 or the extension gasket member 21 to support them .inthe tube- I4.

The collar is provided with suit- 3 Y A ilexible cup gasket 2li is clamped between the external shoulder 22 of the plug 2| and the shoulder portion 23 on the rod I8 when the plug 2| is screwed into place. The gasket 24 maintains a slidable seal against the inner wall of the tube I4.

The tube I4 is provided with inlet openings 3| adjacent its upper extremity, and the metering rod I8 is provided with outlet ports 32, communieating with the chamber I9, adjacent its lower extremity.

The openings 3| are positioned .in a plane substantially opposite the top edge of the partition plate I2. The orifice plug 2| is provided with a central discharge oriiice 33 of predetermined` diameter. The size of the charge orifice may be varied by replacing the plug 2| with `other plugs having orices of differing sizes, so as to accommodate the conditions of the particular installation and the type of solution being fed.

As long as thev pump 35 is operating, the solution level in the compartment 34 will be maintained at the top of the partition plate I2, The discharge head or pressure on the solution discharging throughthe orice 33 will be determined by the distance from the orifice to the solution level in the compartment Sil. This distance can be decreased so as to vreduce the head bydrawing the metering rod 8 upwardly through the cap 29 until the desired flow through the'orice 33' has been attained. The rod can then be set at the selected position by means of 'the set screws 39 to maintain a uniform feed rate.

The extension rod '21 is provided so that in cases where the metering rod I8 has been raised until it projects through the cap 29, the extension can be .unscrewed' and replaced by the carp so as'to prevent an undue projection of `the rod.

lt is preferred to manufacture the tube M and the rod i8 from transparent plastic vto avoid corrosion and so that the now through the tube may be observed. Since the cap 29 is not secured to the outer tube Ill, the metering rod can be withdrawn through the top of the tube for cleaning purposes without disturbing the settingv of the rod.

While a specic form of the improvement has been described andv illustrated herein, it is to be understood that the same may be varied, within the vScope of the appended claims, without departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patent ist l. An adjustable device for discharging predetermined flows of liquid from a container, comprising: a vertical tube extending through, and projecting upwardly and downwardly from, the bottom of said container; said tube 'being formed with inlet openings adjacent the top thereof; a vertically-movable `metering rod extending into said tube; a sealing gasket sealing the vbottom of said rod to the inner surface of the wall of said tube; and the rod being provided with discharge passages extending from a point on said metering rod above said gasket to a point below said gasket so that liquid may ow from `said tube past said gasket, portions of the discharge passages below the gasket being of less 1:low capacity than the inlet openings.

2. An adjustable device for discharging predetermined ows of liquid from a container comprising: a vertical tube extending through, and projecting upwardly and downwardly` from,

the bottom of said container; lsaid tube being formed with inlet openings in saidtube-'adjacent the top thereof; a vertically-movable metering rod extending into said tube; a hollow discharge chamber in the bottom portion of said metering rod; a sealing gasket sealing said rod to said vertical tube below said hollow chamber, said rod being formed with outlet ports communicating between said vertical tube and said hollow chamber; and a plug in the bottom of said tube having a central orifice communicating between said chamber and said tube past said gasket and having a diameter less than the diameter of the inlet openings.

3. An adjustable device for discharging predetermined lows of liquid from a container comprising: a vertical tube extending through,

' and projecting upwardly and downwardly from,

the bottom of said container; said tube being formed with inlet openings adjacent the top thereof; a vertically-movable metering rod eX- tending into said tube; a hollow discharge chamber in the bottom portion of said metering rod; said rod being formed with outlet ports disposed about .and communicating with said chamber; a threaded plug screwed into the lower extrem--` ity of said chamber; a sealing gasket sldably sealing said rod to said tube, said sealing gasket being clamped to said rod by said plug; and said plug being formed with a central orifice communicating with said chamber and being of less diameter than the inlet openings.

4. An adjustable device for discharging predetermined flows of liquid from a container comprising: a vertical tube extending through, and. projecting upwardly and downwardly from, .the

bottom of said container; said tube being formed with inlet openings adjacent the top thereof; a

vertically-movab1e metering rod extending intosaid tube through the top thereof.; a sealing4 gasket sealing the bottom of said rod to the inner surface of the wall of said tube; said rod beingV formed with discharge passages extending from a point on said metering rod above said gasket to a point below said gasket so that liquid may flow from said tube past said gasket, portions of the discharge passages below the gasket being of less flow capacity than the inlet openings; a cap member on said tube, said metering rod projecting through said cap member; and means for locking said metering rod to said cap member in any desired vertical adjustment.

5. An adjustable device for discharging predetermined ilows of liquid from a container come, prising: an outer tube; an externally threaded nipple on said tube intermediate its extremities and adapted to contact the bottom of said container when said tube is passed upwardly therethrough; a sealing nut threaded onto said nipple and sealing the latter to the bottom of said tank; a metering rod extending into said tube through the upper-end thereof and terminating above the lowei1 extremity thereof; a sealing gasket surrounding the lower extremity of said metering rod and seahng the latter to said tube; a cap' member on the upper extremity of said tube and through which said metering rod projects; rod supporting means carried by said cap and supporting said metering rod, the upper portion oi the tube being formed with vertically spaced in let openings, the lower portion of said metering rod being formed with outlet ports; a plug in the bottom of said metering rod formed with an oriiice receiving iluid from said outlet ports and being of less diameterthan the inlet openings.

ROBERT H, PYLE.

"{References 0n following page) REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 524,206 Keefers Aug. 7, 1894 1,163,451 Polmann Dec. 7, 1915 1,749,130 Craig Mar. 4, 1930 

